Skip to main content
SpringerLink
Log in

High-Temperature Thermal Conductivity Measurement Apparatus Based on Guarded Hot Plate Method

  • TEMPMEKO 2016
  • Published:
International Journal of Thermophysics Aims and scope Submit manuscript

Abstract

An alternative calibration procedure has been applied using apparatus built in-house, created to optimize thermal conductivity measurements. The new approach compared to those of usual measurement procedures of thermal conductivity by guarded hot plate (GHP) consists of modified design of the apparatus, modified position of the temperature sensors and new conception in the calculation method, applying the temperature at the inlet section of the specimen instead of the temperature difference across the specimen. This alternative technique is suitable for eliminating the effect of thermal contact resistance arising between a rigid specimen and the heated plate, as well as accurate determination of the specimen temperature and of the heat loss at the lateral edge of the specimen. This paper presents an overview of the specific characteristics of the newly developed “high-temperature thermal conductivity measurement apparatus” based on the GHP method, as well as how the major difficulties are handled in the case of this apparatus, as compared to the common GHP method that conforms to current international standards.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

Abbreviations

GH:

guarded hot plate

HTTCMA:

high-temperature thermal conductivity measurement apparatus

TCR, R :

thermal contact resistance

\(\lambda \) :

thermal conductivity

dQ(z) :

heat flow in axial direction

dQp :

heat loss in radial direction

A:

metering area of the heater plate

\(t_{RS}(z)\) :

temperature function in the metering zone

\(t_{RG}(z)\) :

temperature function in the guard zone

tig :

temperature of the inner surface of the gap

teg :

temperature of the outer surface of the gap

\(\Delta \hbox {t}\) :

temperature drop across the specimen

d :

specimen thickness

\(t_{m}\) :

mean temperature of the specimen

dt/dz :

temperature derivative of the specimen

\(Pe_{MZH}\) :

electrical power supplied to the heater plate

Q :

heat flow at the inlet section of the specimen

Qg :

heat flow loss at the guard-center gap

\(Qg_{t}\) :

total heat flow loss across the center-guard gap

\(Qg_{l}\) :

conductive heat flow across the gap

\(Qg_{R}\) :

radiative heat flow across the gap

tis :

temperature of the inlet section of the specimen

tos :

temperature of the outlet section of the specimen

thp :

temperature of the hot plate surface

tcp :

temperature of the cold plate surface

q :

density of heat flow rate

Ri :

TCR at inlet section of the specimen

Ro :

TCR at outlet section of the specimen

References

  1. International Standard ISO 8302:1991(E), Thermal Insulation—Determination of Steady-state Thermal Resistance and Related Properties—Guarded hot Plate Apparatus (International Organization for Standardization, Geneva, 1991)

  2. Technical Specification CEN/TS 15548-1 :2011(E), Thermal Insulation Products for Building Equipment and Industrial Installations—Determination of Thermal Resistance by Means of the Guarded Hot Plate Method—Part 1: Measurements at elevated temperatures from \(100^ {\circ }\text{C}\) to \(850^ {\circ }\text{ C }\), (2011)

  3. H.Y. Wong, Heat Transfer for Engineers (Longman Group Limited, London, 1983)

    Google Scholar 

  4. R. Siegel, J.R. Howell, Thermal Radiation Heat Transfer, 2nd edn. (Hemisphere Publishing Corporation, Washington, 1981)

    Google Scholar 

  5. M.A. Mihejev, A hoatadas gyakorlati szamitasanak alapjai [Practical Calculations of Heat Transfer] (Tankonyvkiado, Budapest, 1990)

  6. M.B.H. Mantelli, M.M. Yovanovich, Heat Transfer Handbook, Thermal contact resistance (Wiley, Hoboken, 2003)

    Google Scholar 

  7. L.S. Fletcher, A1AA J. Spacecr. Rocket. 9, 849–850 (1972). doi:10.2514/3.61809

    Article  ADS  Google Scholar 

  8. E. Turzo-Andras, Influence of thermal contact resistance in thermal conductivity measurements using guarded hot plate method, In Imeko Proceedings, (2015)

Download references

Acknowledgements

This work was funded through the European Metrology Research Programme (EMRP) Project SIB 52 “Thermo”—Metrology for Thermal Protection Materials. The EMRP is jointly funded by the EMRP participating countries within EURAMET and the European Union.

Author information

Authors and Affiliations

  1. Magyar Kereskedelmi Engedelyezesi Hivatal (MKEH), Budapest, Hungary

    E. Turzo-Andras & T. Magyarlaki

Authors
  1. E. Turzo-Andras
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. T. Magyarlaki
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to E. Turzo-Andras.

Additional information

Selected Papers of the 13th International Symposium on Temperature, Humidity, Moisture and Thermal Measurements in Industry and Science.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Turzo-Andras, E., Magyarlaki, T. High-Temperature Thermal Conductivity Measurement Apparatus Based on Guarded Hot Plate Method. Int J Thermophys 38, 143 (2017). https://doi.org/10.1007/s10765-017-2280-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s10765-017-2280-0

Keywords

Search

Navigation